I have three Fanvil x4 phones that when using the intercom to call the x4 the phone will ring twice then connect.
I have 12 Fanvil x201 phones when they are intercom called to there is no ring just silence until the other end talks.
the phones works and intercom beeps for the receiver.
When the boss make an intercom call to any extension he wants to hear it ring. Need intercom caller sound setting.